Well-drilling machine.



.0. Mlm Mmz, H1 OGY HAA TMMv -.GD

E Mmm .T. .,F AEN Rm mm1 .LA Amm .Wn H P Patented Aug. 15, 1911.

2 SHEETS-#SHEET l.

1 gvwankozs H. A. & A. M. THOMAS.. WELL DRILLING MACHINE.

APPLIQATION FILED Mum 1910 Patented Aug. 15, 1911.

2 SHEETS-SHEET Z.

nnrr

STATES ATENT FFTQ.

HOWARD A. THOMAS AND ASA M. THOMAS, OF DRISCOLL, NORTH DAKOTA.

WELL-DRILLING MACHINE.

Speccaton of Letters Patent.

Patented Auw. i5, 1911.

Application filed May 12, 1910. Serial No. 560,967.

To all who/m it may concern.'

Be it known that we, HOWARD A. THOMAS and ASA M. THOMAS, citizens of the United States, residing at Driscoll, in the county of Burleigh, State of North Dakota, have invented a new and useful wWell-Drilling Machine, of which the following is a specification.

This invention relates to well drilling apparatus in which the drilling tool is operated by raising it, and then permitting it to drop by its own weight, the drillings being removed by water, and it is the obj ect of the invention to provide a simple, inexpensive,

and efficient apparatus of this kind.

Another object of the invention is to provide an apparatus of the kind stated which can be readily hauled or transported from place to place, a wheeled supporting frame being provided on which the entire apparatus, including the pump for washing up the drillings, and the derrick, are carried, the latter being foldable.

The invention also has for its object to provide an apparatus which is easily controlled, the operating levers of the various clutches and other devices extending to one place, so as to be all within easy reach of the attendant.

Another object of the invention is to provide an improved device for operating the drill rope to impart a reciprocatory movement to the drilling tool.

Other objects and advantages of the invention will be apparent when the same is better understood.

The invention is illustrated in the accompanying drawings, in which- Figure 1 is a side elevation of the apparatus. Fig. 2 is an elevation of the means for operating the drill rope to impart a reciprocatory movement to the drilling tool. Fig. 8 is an elevation of the brake mechanism of the drill rope drum. Fig. 4 is a plan view of the ap-paratus.

ln the drawings, 1 denotes the frame of the machine, the same being mounted on the wheels 2, so that the apparatus may be readily transported from one place to another. On the rear end of the frame is supported a stub-derrick 3, to the top of which is pivoted as indicated at 4, the main derrick 5, carrying at the top a pulley 6 over which the drill rope 7 passes. The drill rope is connected' to a suitable drilling tool, and is wound on a drum 8 loosely mounted on a shaft 9 supported in bearings carried by the frame 1 near its rear end. A clutch 10 is provided for locking the drum on its shaft. This clutch is a collar which is splined on the shaft 9 and has on each side a series of locking projections, one series of said projections being adapted to engage similar projections ,on a clutch member 11 fast on the drum. The other series of said projections is adapted to engage corresponding projections on a clutch member 12 carrying.

a shaft 13. On this shaft is a crank arm 14, to which is connected a pitman 15, said pitman being also connected to the free end xof a lever 16 extending transversely of the apparatus, and pivoted at 17 to one side of the stub-derrick. The lever 16 swings in an inclined plane, and carries spaced sheaves 19. A strap 20 fastened to the lever, and extending across the sheaves is provided, for securing said sheaves to the lever. The drill rope 7 extends from the drum 8 over one of the sheaves and then passes to the other sheave, under the same, and thence upwardly to the pulley 6 at the top of th'e derrick 5.

The lever 16, and the parts carried thereby, are provided for imparting a reciprocatory movement to the drilling tool. Upon placing the clutch members 10 and 12 in locking engagement with each other, the shaft 13 is rotated from the shaft 9, and through the crank 14 and the pitman 15 swings the lever 16 up and down. This movement of the lever alternately pulls the drill rope downwardly, and then releases the same, whereby the drill is raised, and then permitted by its own weight to drop. Upon engaging the clutch member 10 with the clutch member 11 of the drum, the latter is locked on the shaft 9. A lever 21 is provided for operating the clutch member 10, said lever upon being swung in one direction engaging the said member with the clutch member 11, and upon being swung in the opposite direction engaging the same with the clutch member 12. The drum is also provided with a brake mechanism which isv shown in detail in Fig. 3. Said brake mechanism comprises a band 22 fastened at one of its ends to a stand 23 mounted on one of the frame memb-ers 1, and passing around fulcrumed at 26 on the stand 23. The friction rim is in the shape of a ring having its inner periphery formed with ratchet teeth 27, which are engageable by a pawl 28 pivoted at 29 to one of the timbers of the stub-derrick 3, and connected by a link 30 to the lever 25. That end of the pawl which engagesthe ratchet teeth is offset so that it may engage the same. The connection between the lever and the pawl is such that the pawl will be disengaged from the ratchet teeth when the lever 25 is swung in a direction to apply the brake, and when the lever is swung in the opposite direction to release the brake, the pawl is simultaneously engaged with the ratchet teeth. By the herein described brake mechanism, the operator can readily control the drum, and check the descent of the drilling tool.

On the front end of the frame of the apparatus is mounted a motor 31 for driving the several parts, said motor being, preferably, an internal combustion engine. On the crank shaft 32 of the motor is slidably mounted a friction disk 33 which is engaged by a friction wheel 34 mounted on a shaft' 35 supported in bearings on the frame members l. The friction disk 33 is mounted on the shaft 32 so as to rotate therewith, and as it is also slidably mounted. on said shaft, it

may be moved away out of contact with the friction wheel 34, whereby the motor is disconnected from the parts to be driven. Any suitable means may be provided for operatispg the friction disk 33 to disengage the same from the friction wheel '34, a lever 36 being shown which extends to the rear end of the apparatus. The friction wheel 34 is splined on the shaft 35 so that it may be moved closer to or farther away from the center of the friction disk, and thus change the speed of the shaft 35. A suitable operating lever 37 for thus operating the friction wheel 34 is provided, said lever also extending to the rear end of the apparatus. The shaft 35 is connected by a belt 38, or any other suitable form of gearing, to a shaft 39 journaled in bearings carried by the frame members 1. On this shaft is a pinion 40 which is in mesh with a spur gear 41 on the shaft 9. The motion of the motor is therefore transmitted through the friction gears 33 and 34,' and the belt 33 to the shaft 39, and through the gears 40 and 41 to the shaft 9, said shaft operating the drum 8 and the disk 13 as already described. The shaft 39 also carries a balance wheel 42.

On each frame member 1 is mounted a pump cylinder 43, the pump outlets being 39, said shaft carrying a sprocket wheel 46 which is connected by a chain 47 to a sprocket wheel 48 mounted on a shaft 49 journaled in suitable bearings on the frame members 1. Any other form of gearing between the shafts 39 and 49 may be provided. The shaft 49 is fitted at its ends with crank disks 50 to which are connected the pitmen 51 of the pump plungers. rThe sprocket wheel 46 is loose on the shaft 39, and is formed with a clutch member 52 adapted to be engaged by a clutch Vmember 53 mounted on the shaft 39, so as to rotate therewith, said clutch member 53 being also slidable on the shaft so that it may be brought into vengagement with the clutch member 52, and when thus engaged, the motion of the shaft 39 is transmitted by the sprocket and chain gearing described, to the shaft 49. The clutch member 53 is provided with an operating leverl 54.

The levers 21, 25, 36, 37 and 54 all extend to the rear end of the apparatus so as to be within easy reach of the operator. The apparatus can be instantly stopped without stopping the motor, upon operating the lever 36 so as to disengage the friction disk 33 from the friction wheel 34, and the speed is also readily controlled upon adjusting the friction wheel on the friction disk by means of the lever 37.

The derrick 5 is pivotally connected to the stub-derrick 3 in order that it may be folded down on top of a supporting frame 54 as shown by dotted lines in F ig. l, so that the apparatus may be readily hauled about from one place to another.

What is claimed is:

A drilling apparatus comprising a frame, a driven shaft journaled thereon, a pump mounted thereon, means for operatively connecting the pump with th'e driven shaft,

a second shaft journaled upon the frame ,Y

and operatively connected with the driven shaft, a drum loosely mounted upon the last mentioned shaft, a drill rope arranged to wind upon the said drum, means for reciprccating the drill rope, a double clutch Y In testimony that we claim the foregoing as our own, we have hereto aiiixed our signatures inthe presence of two witnesses.

HOWARD A. THoMAs. AsA M. TrioMAs.

Witnesses: t

GEO. V. CUNNINGHAM, It. G. MEYERS.

Copies of this patentmay be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

